公开(公告)号：US20240361574A1

公开(公告)日：2024-10-31

申请号：US18763511

申请日：2024-07-03

Applicant: Young Optics Inc.

Inventor： Ching-Sheng CHANG ,  Chia-Chen KUNG ,  Chiu-Jung LAI ,  Kuo-Chuan WANG

IPC: G02B13/00 ,  G02B9/10

CPC classification number: G02B13/003 ,  G02B9/10

Abstract: A low thermal-drift optical lens includes a first lens group, a second lens group and an aperture stop. The first lens group includes a first lens and a second lens, and the second lens group includes a third lens and a cemented lens. The aperture stop is disposed between the second lens and the cemented lens, and a lens with a refractive power of the low thermal-drift optical lens closest to the minified side has at least one inflection point. In an operating temperature range of −40° C. to 80° C., a thermal drift of the low thermal-drift optical lens relative to a focal plane at 25° C. is less than or equal to 10 um.